CN105695921A - Carburization process for large heavy-duty gear - Google Patents
Carburization process for large heavy-duty gear Download PDFInfo
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- CN105695921A CN105695921A CN201410688432.6A CN201410688432A CN105695921A CN 105695921 A CN105695921 A CN 105695921A CN 201410688432 A CN201410688432 A CN 201410688432A CN 105695921 A CN105695921 A CN 105695921A
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- carburization process
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Abstract
The invention discloses a carburization process for a large heavy-duty gear. The carburization process is characterized by comprising the following steps: 1) after furnace charging, preheating a gear to 750 DEG C and maintaining the temperature for 2 h; 2) carrying out heating to 880 to 890 DEG C and temperature homogenization for 4 h and carrying out carburization at 880 to 890 DEG C for 50 h; 3) carrying out heating to 930 DEG C for 12 h (including temperature arrival time) and carrying out primary diffusion; 4) carrying out secondary diffusion at 930 DEG C and maintaining the temperature for 56 h; 5) carrying out ternary diffusion at 930 DEG C and maintaining the temperature for 56 h; and 6) cooling the gear in the furnace to 800 DEG C and taking the gear out of the furnace. The carburization process is simple and can greatly improve all the performances of the gear.
Description
Technical field
The present invention relates to a kind of large heavy-load gear carburization process。
Background technology
Carburizing is that steel part is heating and thermal insulation in carburizing medium in order to increase the carbon content on steel part top layer and carbon profile, and carbon atom penetrates into top layer。Quenching after carbunse tempering, make piece surface hardness improve, wear-resisting。Carbo-nitriding is to penetrate into nitrogen and carbon, the Technology for Heating Processing based on nitriding to workpiece surface。Nitrided layer hardness is relatively low, and fragility is less。But the infiltration layer of carbo-nitriding is relatively thin, heavy load should not be born。
Current carburization process is more complicated, also without unified specification, it does not have unified standard, the quality causing production is uneven, and the processing characteristics of part is bad。
Summary of the invention
Because the drawbacks described above of prior art, the technical problem to be solved is to provide a kind of large heavy-load gear carburization process, and this carburizing process method is simple, it is possible to the performance of gear each side is greatly improved。
For achieving the above object, the invention provides a kind of large heavy-load gear carburization process, it is characterised in that comprise the steps, 1) gear is preheated to 750 DEG C after shove charge, it is incubated 2 hours；
2) 880-890 DEG C and samming 4h altogether it are warming up to, then at 880-890 DEG C of carburizing 50h；
3) be warming up to 930 DEG C include temperature time 12h carry out first time diffusion；
4) second time diffusion 930 DEG C, is incubated 56h；
5) third time diffusion 930 DEG C, is incubated 56h；
6) stove is cooled to 800 DEG C and comes out of the stove。
The invention has the beneficial effects as follows: carburizing process method of the present invention is simple, it is possible to the performance of gear each side is greatly improved。
Detailed description of the invention
Technical scheme disclosed by the invention is a kind of large heavy-load gear carburization process, it is characterised in that comprise the steps, 1) gear is preheated to 750 DEG C after shove charge, it is incubated 2 hours；
2) 880-890 DEG C and samming 4h altogether it are warming up to, then at 880-890 DEG C of carburizing 50h；
3) be warming up to 930 DEG C include temperature time 12h carry out first time diffusion；
4) second time diffusion 930 DEG C, is incubated 56h；
5) third time diffusion 930 DEG C, is incubated 56h；
6) stove is cooled to 800 DEG C and comes out of the stove。
Carburizing process method of the present invention is simple, it is possible to the performance of gear each side is greatly improved。
The preferred embodiment of the present invention described in detail above。Should be appreciated that those of ordinary skill in the art just can make many modifications and variations according to the design of the present invention without creative work。Therefore, all technical staff in the art, all should in the protection domain being defined in the patent claims under this invention's idea on the basis of existing technology by the available technical scheme of logical analysis, reasoning, or a limited experiment。
Claims (1)
1. a large heavy-load gear carburization process, it is characterised in that comprise the steps, 1) gear is preheated to 750 DEG C after shove charge, it is incubated 2 hours；
2) 880-890 DEG C and samming 4h altogether it are warming up to, then at 880-890 DEG C of carburizing 50h；
3) be warming up to 930 DEG C include temperature time 12h carry out first time diffusion；
4) second time diffusion 930 DEG C, is incubated 56h；
5) third time diffusion 930 DEG C, is incubated 56h；
6) stove is cooled to 800 DEG C and comes out of the stove。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410688432.6A CN105695921A (en) | 2014-11-26 | 2014-11-26 | Carburization process for large heavy-duty gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410688432.6A CN105695921A (en) | 2014-11-26 | 2014-11-26 | Carburization process for large heavy-duty gear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105695921A true CN105695921A (en) | 2016-06-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410688432.6A Pending CN105695921A (en) | 2014-11-26 | 2014-11-26 | Carburization process for large heavy-duty gear |
Country Status (1)
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| CN (1) | CN105695921A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106756755A (en) * | 2016-12-12 | 2017-05-31 | 中车戚墅堰机车车辆工艺研究所有限公司 | The carburization quenching method of large excavator gear |
| CN109628726A (en) * | 2017-10-09 | 2019-04-16 | 徐州东鹏工具制造有限公司 | A kind of heat treatment process of gear |
-
2014
- 2014-11-26 CN CN201410688432.6A patent/CN105695921A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106756755A (en) * | 2016-12-12 | 2017-05-31 | 中车戚墅堰机车车辆工艺研究所有限公司 | The carburization quenching method of large excavator gear |
| CN106756755B (en) * | 2016-12-12 | 2018-10-02 | 中车戚墅堰机车车辆工艺研究所有限公司 | The carburization quenching method of large excavator gear |
| CN109628726A (en) * | 2017-10-09 | 2019-04-16 | 徐州东鹏工具制造有限公司 | A kind of heat treatment process of gear |
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Legal Events
| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160622 |